Great War at Sea is a series of games based on naval conflicts that occurred or could have occurred during the era of the First World War. During the early decades of the 20th century, the United States Navy made plans to fight a host of potential enemies.Some of these future wars seemed inevitable, particularly that with Japan. Others depended on changes in current politics, but Navy planners wanted to be prepared just in case. One of these plans, labelled 'Gold,' studied a potential naval war with France.